Just sell the PS3 version and rereleased PC version with some crazy subtitle.

Notice how on the title for CoP, "Chains of Promathia" takes a smaller font than FFXI does.

Instead, just put "Final Fantasy XIV 2.0" as a smaller title, and then put "REBIRTH OF A NATION" as the title (in reference to rebuilding Eorzea after the fall of Dalamud)

or something like that.